氧化锌分散液的制备及机理研究  

Preparation and Mechanism of Dispersion of ZnO Slurry

作　　者：苏小莉[1] 马春玉[1] 蔡天聪 汤长青[1] SU Xiao-li;MA Chun-yu;CAI Tian-cong;TANG Chang-qing(Department of Metallurgy and Chemical Engineering,Jiyuan Vacational and Technical College,Jiyuan 459000,Henan,China;Henan Mt Nanotechnology Limited Liability Company,Jiyuan 459000,Henan,China)

机构地区：[1]济源职业技术学院冶化系,河南济源459000 [2]河南王屋纳米科技有限责任公司,河南济源459000

出　　处：《有色金属（冶炼部分）》2019年第12期60-64,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：济源市2018年度科技攻关计划项目（18022012）;济源职业技术学院资助项目（JZXY-2019-89）

摘　　要：采用超声解团聚法制备氧化锌分散液,探讨了体系pH对氧化锌分散液的影响,考察了分散剂聚丙烯酸(PAA)用量和超声时间对氧化锌分散液稳定性的作用规律,重点阐述了超声解团聚法形成氧化锌分散液的机理。研究表明:当pH=7、PAA用量1.5%、超声分散时间120 min时,氧化锌分散液的分散性和稳定性最好。超声解团聚法制备分散液过程中,经历了润湿、超声解团聚分散、超声后分散液稳定三个阶段,氧化锌粉体会生成较小团聚体,加入分散剂PAA不仅可以提高分散效率,同时可以起到稳定新生成较小团聚体的作用。ZnO dispersion slurry was prepared by ultrasonic dispersion method.Effect of pH value on ZnO slurry was discussed.Effects of dosage of dispersant(polyacrylic acid,PAA)and ultrasonic dispersion time on stability of ZnO slurry were investigated.Mechanism of formation of zinc oxide slurry by ultrasonic dispersion method was elaborated.The results show that stable dispersed ZnO slurry can be obtained by adding 1.5%(mass fraction)PAA as dispersant and ultrasonic treatment of 120 min at pH=7.There are three stages in ultrasonic dispersion method,namely wetting,ultrasonic dispersion,and stability of dispersion solution.During this process smaller ZnO agglomeration will be generated.Addition of PAA will not only improve dispersion efficiency,but also play a role in stabilizing smaller aggregates.

关 键 词：氧化锌分散液 机理 制备 聚丙烯酸 

分 类 号：O614[理学—无机化学]